Only in this way can professional knowledge and skills be _________ to improve the productivity. ( 章节：1 难度：1)
- A、undertaken
- B、tackled
- C、harnessed
- D、reflected
正确答案:B
答案解析:有
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Only in this way can professional knowledge and skills be _________ to improve the productivity. ( 章节：1 难度：1)
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